Fix bash completion for events --filter daemon=

[albers]

- What I did
Fixed the "legacy" bash completion for events --filter daemon= that no longer works.

- How I did it
Changed completion logic from parsing the bare docker info output to using a --filter matching the desired values.

- How to verify it
type

docker events --filter daemon=<tab><tab>

Before: no completion
With this fix: completion of ID and hostname of the current docker daemon.

- Description for the changelog
Fixed bash completion for events --filter daemon=

Fixed bash completion for `events --filter daemon=`

- A picture of a cute animal (not mandatory but encouraged)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.57%. Comparing base (21eea1e) to head (3f7b156).
Report is 36 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5554      +/-   ##
==========================================
- Coverage   60.67%   59.57%   -1.10%     
==========================================
  Files         345      345              
  Lines       23491    29088    +5597     
==========================================
+ Hits        14252    17330    +3078     
- Misses       8266    10788    +2522     
+ Partials      973      970       -3     

[thaJeztah]

LGTM, thanks! 🙏